Re: 21 million inodes is causing severe pauses.

[Robin Holt]

On Mon, Nov 15, 2004 at 02:57:14PM -0800, Andrew Morton wrote:
> Robin Holt <holt@xxxxxxx> wrote:
> >
> > One significant problem we are running into is autofs trying to umount the
> > file systems.  This results in the umount grabbing the BKL and inode_lock,
> > holding it while it scans through the inode_list and others looking for
> > inodes used by this super block and attempting to free them.
> 
> You'll need invalidate_inodes-speedup.patch and
> break-latency-in-invalidate_list.patch (or an equivalent).

With these patches and a new test where I periodically put on mild
but diminishing memory pressure, I have been able to get the number
of inodes up to 31 Million.  I would really like to find a way to
reduce limit the number of inodes or am I seeing a problem where
none exists?  After putting on constant mild memory pressure, I have
seen then number of inodes stabilize at 17-18 Million.

Robin
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